Check whether this free modules helps: https://apps.odoo.com/apps/modules/12.0/muk_web_client_refresh/

Thank you @Cybrosys.

Your help and support is always valueable.

I have tested this module already.

It did not helped me achieve what I want but I am sure it's the way I am using it.

I unable to write the correct python code for achieve what I need and perhaps you can help me once again.

As per my message, I have a "model" which have an integrated many2one field into it.

What I need to do is, refresh the form view whenever user "Adds a new item" to this many2one related field.

Using this module, I have added the following python code on the "Automated Refresh":

- Trigger condition: Based on form modification (also tried on Create and Update);

- Model: The model where user will see the many2one related field.

- On change fields trigger: env["bus.bus"].sendone("refresh",{"model":model._name})

Thank you once again